import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 22652
 * Date: 2024-04-29
 * Time: 18:54
 */
public class demo_3 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int num = in.nextInt();
            String string=in.next();
            int[] flsgs=new int[num];
            char[] chars=new char[num];
            int m=0;
            for (int i = 0; i < num; i++) {
                char ch=string.charAt(0);
                while (flsgs[i]==0){

                }
            }
        }
    }
}
